D250E Series II and D300E Series II Articulated Trucks Power Train Caterpillar

Installation Procedure

1. Inspect all parts and clean all parts. If any parts are worn or damaged, use new Caterpillar parts for replacement.

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Illustration 1	g00509802

2. Position hydraulic control valve (17) to the retarder. Install three bolts (18) that secure retarder hydraulic control valve (17) to the retarder.

3. Connect electrical connection (14) . Install bolt (16) and harness clip (15) to the machine frame.

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Illustration 2	g00509801

4. Install the O-ring seals to hydraulic pipe (12) , hydraulic hose (10) and hydraulic hose (14) .

5. Install eight bolts (13) and four half clamps (9) in order to connect hydraulic pipe (12) and hydraulic hose (14) to the retarder hydraulic control valve. Tighten retaining nut (11) in order to connect hydraulic hose (10) to the retarder hydraulic control valve.

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Illustration 3	g00509800

Note: Sensor housing (2) will drop from the retarder hydraulic control valve when bolts (5) are removed.

6. Remove eight bolts (5) , two half clamps (4) and two plugs (8) from the retarder hydraulic control valve.

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Illustration 4	g00509798

7. Install the O-ring seals to hydraulic pipes (1) and (6) . Check the condition of the O-ring seal in sensor housing (2) . If the O-ring seal is damaged replace the component with new Caterpillar parts. Position sensor housing (2) to the retarder hydraulic control valve.

8. Install hydraulic pipes (1) and (6) to the retarder hydraulic control valve and in hydraulic hoses (3) . Tighten hose clamps (7) to secure hydraulic pipes (1) and (6) to hydraulic hoses (3) . Install eight bolts (5) and four half clamps (4) in order to connect hydraulic pipes (1) and (6) to the retarder hydraulic control valve.

9. Check the level of fluid in the oil system. Fill the oil system to the proper level. See Operation and Maintenance Manual, SEBU7028 for the correct procedure.

End By: Install the crankcase guard. Refer to Disassembly and AssemblySENR9124, "Crankcase Guard- Remove and Install".